Ruud van Nistelrooy's struggling side knew a defeat in north London would see it equal its worst streak in league history, and it fell behind shortly after the half-hour mark.

Richarlison, who was making his first league start of the season after struggling with a hamstring injury, got away from Wout Faes and James Justin to nod Pedro Porro's cross home.

However, two goals in the first five minutes of the second half turned the game on its head, with Jamie Vardy tapping home just 57 seconds after the restart.

Bilal El Khannouss then put Leicester ahead with a curler from just outside the D, after the impressive Bobby De Cordova-Reid pounced on some sloppy play from Rodrigo Bentancur.

Porro saw a free-kick deflect off Vardy and hit the crossbar just after the hour mark, but that was as close as Tottenham came to an equaliser as they slipped to a fourth straight league defeat.

Spurs remain 15th in the league, with Postecoglou under mounting pressure ahead of next week's trip to Brentford.

But the Australian says he is convinced his players are giving everything to end their dreadful run of form.

"It hurts a lot. The players gave everything again," he said, refusing to criticise anyone.

"We are going to look at a lot of things, but in terms of effort, I can't ask any more of this group. Things just didn't go our way.

"We created some good opportunities and, unfortunately, things just didn't drop for us - not because the players weren't trying, and that's the main thing.

"The players are giving everything they can. That is all we can ask for as a football club, and me as a manager. They are trying their hardest and that is all anyone can ask for.

"When you're in this situation, they are trying as hard as they can and, sometimes, that doesn't give you the clarity in decision-making."

Postecoglou is certain his players will get back to winning ways when they recover key players.

"All you can ask is for people to do as much as they can, and from my perspective, I see a group of players that are giving as much as they can. I know it will turn," he said.

"We'll get some players back. We were short again today but, in the next couple of weeks, there are some really important players coming back that I know will help this group.

"We've not hit a ceiling. We've been going like this for two months. They put in an enormous performance on Thursday to make sure we're OK in Europe, and they had to back it up today, but there were probably at least two or three players that weren't 100 per cent."

Chairman Daniel Levy was the target of dissenting chants throughout the game, while some sections of the home crowd jeered Postecoglou's decision to withdraw Richarlison in the 54th minute.

The result has left the former Celtic boss's position under scrutiny, and he knows he will be held responsible if things do not change.

"I'm a football manager and I get judged on results," he concluded. "That is the way of the world."

Leicester, meanwhile, went above Wolverhampton Wanderers to go 17th on the table, with 16th-placed Everton next up for the Foxes.